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If you crank the shaft of a dc motor manually will the motor become a dc generator?
It depends on both the wiring of the motor and what if any residual magnetic field remains in the field windings. If there is some residual field, you will get some volts, but not many. If the motor has permanent magnets, it is effectively a dynamo.
When a shunt generator fails to build up the voltage then how to rectify the fault?
It fails to build up because self excited DC motor's armature have only one direction of rotation. So that if the poles of the armature are reversed, then this causes the reduction in the residual magnetism and eventually, it will stop.
Why fan motor is not self started?
Why fan motor is not self started?
How space heating of electric motor is switch off when motor is started?
When an electric motor is started, space heating is typically managed by using a control system that monitors the motor's temperature. Once the motor reaches a certain operating temperature, the control system can deactivate the heating elements or adjust the power supplied to them. This process ensures that the motor operates efficiently without overheating, as excessive heat can lead to damage or reduced performance. Additionally, thermal protection devices may be employed to automatically cut off heating if temperatures exceed safe limits.
What is wye-delta motor control?
It is a type of starter that allows a motor to be started across the line by starting the motor with a reduced inrush current. The motor is started in a wye configuration until it gets up to speed and then a timer drops the wye contactor out a draws the delta configured contactor in. The motor then operates in a delta wired configuration.
Would the motor turn if only the armature were excited?
A motor will turn when only the armature is excited, if there is enough residual magnetism in the field.
Why an input voltage exists for the motor started to move?
because of the residual magnetic flux that exists in the motor initially due to the poles
Why an input voltage exists for the motor just started to move?
because of the residual magnetic flux that exists in the motor initially due to the poles
Can a motor lose residual magnetism in the stator and if so how can it be restored?
Yes it can be restored by priming the generator set using a 12 volt battery. Connect the battery in right polarity to the slip rings. The generator must be run first, as soon as the voltmeter register rising voltage disconnect the battery immediately.
Why won't my split-phase AC motor generate - I've got a Dayton motor I want to use as a generator but no matter how fast I spin the motor it won't generate more than a couple of volts - Help?
You must have a permanent magnet in the field or residual magnetism that produce magnetic flux lines across the rotating conductors. Without an energized coil (electromagnet) or permanent magnet near the conductors, the motor will never be able to create electricity.
How do dryers use magnetism?
The magnetic hold in coil uses magnetism along with the electric motor that turns the drum.
If you crank the shaft of a dc motor manually will the motor become a dc generator?
It depends on both the wiring of the motor and what if any residual magnetic field remains in the field windings. If there is some residual field, you will get some volts, but not many. If the motor has permanent magnets, it is effectively a dynamo.
Why dc series motor is always runs at loads?
At no load, the flux is only due to the residual flux, which is very small. the no load speed of dc series motor is very high. so the rotating part of the motor are damaged. hince dc series motor should never be run without motor.
When a shunt generator fails to build up the voltage then how to rectify the fault?
It fails to build up because self excited DC motor's armature have only one direction of rotation. So that if the poles of the armature are reversed, then this causes the reduction in the residual magnetism and eventually, it will stop.
How do you convert electrical energy to kinetic?
Most often through induced magnetism such as an electric motor.
What is a motor in physical science?
A motor is a mechanism that spins by means of electric energy and uses magnetism to spin. It uses energy.
What is a device that uses the interaction between electricity and magnetism to produce motion?
Electric motor
